EV-grade lithium sulfide and preparation method for the same
US12258269B1 · kind B1 · utility
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Key dates
| Filing date | Jul 16, 2024 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Jul 16, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A preparation method for EV-grade lithium sulfide includes: mixing and reacting sulfur powder, metallic lithium and a lithium-containing additive to obtain a crude lithium sulfide product, and then pulverizing and calcining the crude lithium sulfide product to remove excess sulfur powder to obtain the EV-grade lithium sulfide. The method being used for preparing the lithium sulfide is advantaged in simple process, strong operability, large-scale production, and being capable to meet the requirements for safe operation and EV-grade lithium sulfide, without toxic gas generation and secondary pollution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.